need help with render texture

Unity Engine
1

heyy everyone i have set up a minimap using render texture using this code

var	mTexture 	: Texture;
var	mMatt 		: Material;
function OnGUI () {
	if (Event.current.type == EventType.Repaint){
		Graphics.DrawTexture(Rect(0,-1,250,250), mTexture,Rect(0,0,1,1),0,0,0,0,mMatt);
	}
}

which was originally ment to set a texture such as “Hard” from the standard assets and then display a material onto the texture which was a cemera rendertexture material but that didn’t work so i found this shader

Shader "MaskedTexture"
{
   Properties
   {
      _MainTex ("Base (RGB)", 2D) = "white" {}
      _Mask ("Culling Mask", 2D) = "white" {}
      _Cutoff ("Alpha cutoff", Range (0,1)) = 0.1
   }
   SubShader
   {
      Tags {"Queue"="Transparent"}
      Lighting Off
      ZWrite Off
      Blend SrcAlpha OneMinusSrcAlpha
      AlphaTest GEqual [_Cutoff]
      Pass
      {
         SetTexture [_Mask] {combine texture}
         SetTexture [_MainTex] {combine texture, previous}
      }
   }
}

and used it with my material and that worked but i want to be able to make it so i can change the color of the map like what this person’s map looks like
http://forum.unity3d.com/threads/59622-Graphics.Draw-being-rendered-in-the-actual-game…-Solved?highlight=minimap

ok so that was really hard to explain and probably doesnt make sense to anyone so if you dont understand i will try to rephrase it pretty much i want to achieve what the person from that link has done using render texture but of cause with my own map material. i have got mine working where the map is round and displays what the camera sees i just cant figure out how to make it so i can add my own texture to it and make the map a different color so it doesnt blend into the map.

2

ok so i have realized i explained that totally wrong so i have made a picture explaining what i mean

so the green is the game and the white circle is the minimap what i want is to be able to add a border around the minimap like in that picture as you can see the border is black so thats what i need to do be able to add a border around my map im guessing it will require some additions to that shader and another texture the same size as the map with just a little extra bigger so you can see it as a border but i do not no how to do this so please help

3

never mind i have fixed it myself i simply added a gui draw texture onto the minimap script and made a border in photoshop